Imported Upstream version 17.05

Change-Id: Id1e419c5a214e4a18739663b91f0f9a549f1fdc6
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>

1 files changed, 734 insertions, 0 deletions

diff --git a/drivers/net/sfc/base/siena_nvram.c b/drivers/net/sfc/base/siena_nvram.c
new file mode 100644
index 00000000..af4cf172
--- /dev/null
+++ b/drivers/net/sfc/base/siena_nvram.c
@@ -0,0 +1,734 @@
+/*
+ * Copyright (c) 2009-2016 Solarflare Communications Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are
+ * those of the authors and should not be interpreted as representing official
+ * policies, either expressed or implied, of the FreeBSD Project.
+ */
+
+#include "efx.h"
+#include "efx_impl.h"
+
+#if EFSYS_OPT_SIENA
+
+#if EFSYS_OPT_VPD || EFSYS_OPT_NVRAM
+
+	__checkReturn		efx_rc_t
+siena_nvram_partn_size(
+	__in			efx_nic_t *enp,
+	__in			uint32_t partn,
+	__out			size_t *sizep)
+{
+	efx_rc_t rc;
+
+	if ((1 << partn) & ~enp->en_u.siena.enu_partn_mask) {
+		rc = ENOTSUP;
+		goto fail1;
+	}
+
+	if ((rc = efx_mcdi_nvram_info(enp, partn, sizep,
+	    NULL, NULL, NULL)) != 0) {
+		goto fail2;
+	}
+
+	return (0);
+
+fail2:
+	EFSYS_PROBE(fail2);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+siena_nvram_partn_lock(
+	__in			efx_nic_t *enp,
+	__in			uint32_t partn)
+{
+	efx_rc_t rc;
+
+	if ((rc = efx_mcdi_nvram_update_start(enp, partn)) != 0) {
+		goto fail1;
+	}
+
+	return (0);
+
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+siena_nvram_partn_read(
+	__in			efx_nic_t *enp,
+	__in			uint32_t partn,
+	__in			unsigned int offset,
+	__out_bcount(size)	caddr_t data,
+	__in			size_t size)
+{
+	size_t chunk;
+	efx_rc_t rc;
+
+	while (size > 0) {
+		chunk = MIN(size, SIENA_NVRAM_CHUNK);
+
+		if ((rc = efx_mcdi_nvram_read(enp, partn, offset, data, chunk,
+			    MC_CMD_NVRAM_READ_IN_V2_DEFAULT)) != 0) {
+			goto fail1;
+		}
+
+		size -= chunk;
+		data += chunk;
+		offset += chunk;
+	}
+
+	return (0);
+
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+siena_nvram_partn_erase(
+	__in			efx_nic_t *enp,
+	__in			uint32_t partn,
+	__in			unsigned int offset,
+	__in			size_t size)
+{
+	efx_rc_t rc;
+
+	if ((rc = efx_mcdi_nvram_erase(enp, partn, offset, size)) != 0) {
+		goto fail1;
+	}
+
+	return (0);
+
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+siena_nvram_partn_write(
+	__in			efx_nic_t *enp,
+	__in			uint32_t partn,
+	__in			unsigned int offset,
+	__out_bcount(size)	caddr_t data,
+	__in			size_t size)
+{
+	size_t chunk;
+	efx_rc_t rc;
+
+	while (size > 0) {
+		chunk = MIN(size, SIENA_NVRAM_CHUNK);
+
+		if ((rc = efx_mcdi_nvram_write(enp, partn, offset,
+			    data, chunk)) != 0) {
+			goto fail1;
+		}
+
+		size -= chunk;
+		data += chunk;
+		offset += chunk;
+	}
+
+	return (0);
+
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+siena_nvram_partn_unlock(
+	__in			efx_nic_t *enp,
+	__in			uint32_t partn)
+{
+	boolean_t reboot;
+	efx_rc_t rc;
+
+	/*
+	 * Reboot into the new image only for PHYs. The driver has to
+	 * explicitly cope with an MC reboot after a firmware update.
+	 */
+	reboot = (partn == MC_CMD_NVRAM_TYPE_PHY_PORT0 ||
+		    partn == MC_CMD_NVRAM_TYPE_PHY_PORT1 ||
+		    partn == MC_CMD_NVRAM_TYPE_DISABLED_CALLISTO);
+
+	rc = efx_mcdi_nvram_update_finish(enp, partn, reboot, NULL);
+	if (rc != 0)
+		goto fail1;
+
+	return (0);
+
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+#endif	/* EFSYS_OPT_VPD || EFSYS_OPT_NVRAM */
+
+#if EFSYS_OPT_NVRAM
+
+typedef struct siena_parttbl_entry_s {
+	unsigned int		partn;
+	unsigned int		port;
+	efx_nvram_type_t	nvtype;
+} siena_parttbl_entry_t;
+
+static siena_parttbl_entry_t siena_parttbl[] = {
+	{MC_CMD_NVRAM_TYPE_DISABLED_CALLISTO,	1, EFX_NVRAM_NULLPHY},
+	{MC_CMD_NVRAM_TYPE_DISABLED_CALLISTO,	2, EFX_NVRAM_NULLPHY},
+	{MC_CMD_NVRAM_TYPE_MC_FW,		1, EFX_NVRAM_MC_FIRMWARE},
+	{MC_CMD_NVRAM_TYPE_MC_FW,		2, EFX_NVRAM_MC_FIRMWARE},
+	{MC_CMD_NVRAM_TYPE_MC_FW_BACKUP,	1, EFX_NVRAM_MC_GOLDEN},
+	{MC_CMD_NVRAM_TYPE_MC_FW_BACKUP,	2, EFX_NVRAM_MC_GOLDEN},
+	{MC_CMD_NVRAM_TYPE_EXP_ROM,		1, EFX_NVRAM_BOOTROM},
+	{MC_CMD_NVRAM_TYPE_EXP_ROM,		2, EFX_NVRAM_BOOTROM},
+	{MC_CMD_NVRAM_TYPE_EXP_ROM_CFG_PORT0,	1, EFX_NVRAM_BOOTROM_CFG},
+	{MC_CMD_NVRAM_TYPE_EXP_ROM_CFG_PORT1,	2, EFX_NVRAM_BOOTROM_CFG},
+	{MC_CMD_NVRAM_TYPE_PHY_PORT0,		1, EFX_NVRAM_PHY},
+	{MC_CMD_NVRAM_TYPE_PHY_PORT1,		2, EFX_NVRAM_PHY},
+	{MC_CMD_NVRAM_TYPE_FPGA,		1, EFX_NVRAM_FPGA},
+	{MC_CMD_NVRAM_TYPE_FPGA,		2, EFX_NVRAM_FPGA},
+	{MC_CMD_NVRAM_TYPE_FPGA_BACKUP,		1, EFX_NVRAM_FPGA_BACKUP},
+	{MC_CMD_NVRAM_TYPE_FPGA_BACKUP,		2, EFX_NVRAM_FPGA_BACKUP},
+	{MC_CMD_NVRAM_TYPE_FC_FW,		1, EFX_NVRAM_FCFW},
+	{MC_CMD_NVRAM_TYPE_FC_FW,		2, EFX_NVRAM_FCFW},
+	{MC_CMD_NVRAM_TYPE_CPLD,		1, EFX_NVRAM_CPLD},
+	{MC_CMD_NVRAM_TYPE_CPLD,		2, EFX_NVRAM_CPLD},
+	{MC_CMD_NVRAM_TYPE_LICENSE,		1, EFX_NVRAM_LICENSE},
+	{MC_CMD_NVRAM_TYPE_LICENSE,		2, EFX_NVRAM_LICENSE}
+};
+
+	__checkReturn		efx_rc_t
+siena_nvram_type_to_partn(
+	__in			efx_nic_t *enp,
+	__in			efx_nvram_type_t type,
+	__out			uint32_t *partnp)
+{
+	efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
+	unsigned int i;
+
+	EFSYS_ASSERT3U(type, <, EFX_NVRAM_NTYPES);
+	EFSYS_ASSERT(partnp != NULL);
+
+	for (i = 0; i < EFX_ARRAY_SIZE(siena_parttbl); i++) {
+		siena_parttbl_entry_t *entry = &siena_parttbl[i];
+
+		if (entry->port == emip->emi_port && entry->nvtype == type) {
+			*partnp = entry->partn;
+			return (0);
+		}
+	}
+
+	return (ENOTSUP);
+}
+
+
+#if EFSYS_OPT_DIAG
+
+	__checkReturn		efx_rc_t
+siena_nvram_test(
+	__in			efx_nic_t *enp)
+{
+	efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
+	siena_parttbl_entry_t *entry;
+	unsigned int i;
+	efx_rc_t rc;
+
+	/*
+	 * Iterate over the list of supported partition types
+	 * applicable to *this* port
+	 */
+	for (i = 0; i < EFX_ARRAY_SIZE(siena_parttbl); i++) {
+		entry = &siena_parttbl[i];
+
+		if (entry->port != emip->emi_port ||
+		    !(enp->en_u.siena.enu_partn_mask & (1 << entry->partn)))
+			continue;
+
+		if ((rc = efx_mcdi_nvram_test(enp, entry->partn)) != 0) {
+			goto fail1;
+		}
+	}
+
+	return (0);
+
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+#endif	/* EFSYS_OPT_DIAG */
+
+
+#define	SIENA_DYNAMIC_CFG_SIZE(_nitems)					\
+	(sizeof (siena_mc_dynamic_config_hdr_t) + ((_nitems) *		\
+	sizeof (((siena_mc_dynamic_config_hdr_t *)NULL)->fw_version[0])))
+
+	__checkReturn		efx_rc_t
+siena_nvram_get_dynamic_cfg(
+	__in			efx_nic_t *enp,
+	__in			uint32_t partn,
+	__in			boolean_t vpd,
+	__out			siena_mc_dynamic_config_hdr_t **dcfgp,
+	__out			size_t *sizep)
+{
+	siena_mc_dynamic_config_hdr_t *dcfg = NULL;
+	size_t size;
+	uint8_t cksum;
+	unsigned int vpd_offset;
+	unsigned int vpd_length;
+	unsigned int hdr_length;
+	unsigned int nversions;
+	unsigned int pos;
+	unsigned int region;
+	efx_rc_t rc;
+
+	EFSYS_ASSERT(partn == MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT0 ||
+		    partn == MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT1);
+
+	/*
+	 * Allocate sufficient memory for the entire dynamiccfg area, even
+	 * if we're not actually going to read in the VPD.
+	 */
+	if ((rc = siena_nvram_partn_size(enp, partn, &size)) != 0)
+		goto fail1;
+
+	EFSYS_KMEM_ALLOC(enp->en_esip, size, dcfg);
+	if (dcfg == NULL) {
+		rc = ENOMEM;
+		goto fail2;
+	}
+
+	if ((rc = siena_nvram_partn_read(enp, partn, 0,
+	    (caddr_t)dcfg, SIENA_NVRAM_CHUNK)) != 0)
+		goto fail3;
+
+	/* Verify the magic */
+	if (EFX_DWORD_FIELD(dcfg->magic, EFX_DWORD_0)
+	    != SIENA_MC_DYNAMIC_CONFIG_MAGIC)
+		goto invalid1;
+
+	/* All future versions of the structure must be backwards compatible */
+	EFX_STATIC_ASSERT(SIENA_MC_DYNAMIC_CONFIG_VERSION == 0);
+
+	hdr_length = EFX_WORD_FIELD(dcfg->length, EFX_WORD_0);
+	nversions = EFX_DWORD_FIELD(dcfg->num_fw_version_items, EFX_DWORD_0);
+	vpd_offset = EFX_DWORD_FIELD(dcfg->dynamic_vpd_offset, EFX_DWORD_0);
+	vpd_length = EFX_DWORD_FIELD(dcfg->dynamic_vpd_length, EFX_DWORD_0);
+
+	/* Verify the hdr doesn't overflow the partn size */
+	if (hdr_length > size || vpd_offset > size || vpd_length > size ||
+	    vpd_length + vpd_offset > size)
+		goto invalid2;
+
+	/* Verify the header has room for all it's versions */
+	if (hdr_length < SIENA_DYNAMIC_CFG_SIZE(0) ||
+	    hdr_length < SIENA_DYNAMIC_CFG_SIZE(nversions))
+		goto invalid3;
+
+	/*
+	 * Read the remaining portion of the dcfg, either including
+	 * the whole of VPD (there is no vpd length in this structure,
+	 * so we have to parse each tag), or just the dcfg header itself
+	 */
+	region = vpd ? vpd_offset + vpd_length : hdr_length;
+	if (region > SIENA_NVRAM_CHUNK) {
+		if ((rc = siena_nvram_partn_read(enp, partn, SIENA_NVRAM_CHUNK,
+		    (caddr_t)dcfg + SIENA_NVRAM_CHUNK,
+		    region - SIENA_NVRAM_CHUNK)) != 0)
+			goto fail4;
+	}
+
+	/* Verify checksum */
+	cksum = 0;
+	for (pos = 0; pos < hdr_length; pos++)
+		cksum += ((uint8_t *)dcfg)[pos];
+	if (cksum != 0)
+		goto invalid4;
+
+	goto done;
+
+invalid4:
+	EFSYS_PROBE(invalid4);
+invalid3:
+	EFSYS_PROBE(invalid3);
+invalid2:
+	EFSYS_PROBE(invalid2);
+invalid1:
+	EFSYS_PROBE(invalid1);
+
+	/*
+	 * Construct a new "null" dcfg, with an empty version vector,
+	 * and an empty VPD chunk trailing. This has the neat side effect
+	 * of testing the exception paths in the write path.
+	 */
+	EFX_POPULATE_DWORD_1(dcfg->magic,
+			    EFX_DWORD_0, SIENA_MC_DYNAMIC_CONFIG_MAGIC);
+	EFX_POPULATE_WORD_1(dcfg->length, EFX_WORD_0, sizeof (*dcfg));
+	EFX_POPULATE_BYTE_1(dcfg->version, EFX_BYTE_0,
+			    SIENA_MC_DYNAMIC_CONFIG_VERSION);
+	EFX_POPULATE_DWORD_1(dcfg->dynamic_vpd_offset,
+			    EFX_DWORD_0, sizeof (*dcfg));
+	EFX_POPULATE_DWORD_1(dcfg->dynamic_vpd_length, EFX_DWORD_0, 0);
+	EFX_POPULATE_DWORD_1(dcfg->num_fw_version_items, EFX_DWORD_0, 0);
+
+done:
+	*dcfgp = dcfg;
+	*sizep = size;
+
+	return (0);
+
+fail4:
+	EFSYS_PROBE(fail4);
+fail3:
+	EFSYS_PROBE(fail3);
+
+	EFSYS_KMEM_FREE(enp->en_esip, size, dcfg);
+
+fail2:
+	EFSYS_PROBE(fail2);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+siena_nvram_get_subtype(
+	__in			efx_nic_t *enp,
+	__in			uint32_t partn,
+	__out			uint32_t *subtypep)
+{
+	efx_mcdi_req_t req;
+	uint8_t payload[MAX(MC_CMD_GET_BOARD_CFG_IN_LEN,
+			    MC_CMD_GET_BOARD_CFG_OUT_LENMAX)];
+	efx_word_t *fw_list;
+	efx_rc_t rc;
+
+	(void) memset(payload, 0, sizeof (payload));
+	req.emr_cmd = MC_CMD_GET_BOARD_CFG;
+	req.emr_in_buf = payload;
+	req.emr_in_length = MC_CMD_GET_BOARD_CFG_IN_LEN;
+	req.emr_out_buf = payload;
+	req.emr_out_length = MC_CMD_GET_BOARD_CFG_OUT_LENMAX;
+
+	efx_mcdi_execute(enp, &req);
+
+	if (req.emr_rc != 0) {
+		rc = req.emr_rc;
+		goto fail1;
+	}
+
+	if (req.emr_out_length_used < MC_CMD_GET_BOARD_CFG_OUT_LENMIN) {
+		rc = EMSGSIZE;
+		goto fail2;
+	}
+
+	if (req.emr_out_length_used <
+	    MC_CMD_GET_BOARD_CFG_OUT_FW_SUBTYPE_LIST_OFST +
+	    (partn + 1) * sizeof (efx_word_t)) {
+		rc = ENOENT;
+		goto fail3;
+	}
+
+	fw_list = MCDI_OUT2(req, efx_word_t,
+			    GET_BOARD_CFG_OUT_FW_SUBTYPE_LIST);
+	*subtypep = EFX_WORD_FIELD(fw_list[partn], EFX_WORD_0);
+
+	return (0);
+
+fail3:
+	EFSYS_PROBE(fail3);
+fail2:
+	EFSYS_PROBE(fail2);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+siena_nvram_partn_get_version(
+	__in			efx_nic_t *enp,
+	__in			uint32_t partn,
+	__out			uint32_t *subtypep,
+	__out_ecount(4)		uint16_t version[4])
+{
+	siena_mc_dynamic_config_hdr_t *dcfg;
+	siena_parttbl_entry_t *entry;
+	uint32_t dcfg_partn;
+	unsigned int i;
+	efx_rc_t rc;
+
+	if ((1 << partn) & ~enp->en_u.siena.enu_partn_mask) {
+		rc = ENOTSUP;
+		goto fail1;
+	}
+
+	if ((rc = siena_nvram_get_subtype(enp, partn, subtypep)) != 0)
+		goto fail2;
+
+	/*
+	 * Some partitions are accessible from both ports (for instance BOOTROM)
+	 * Find the highest version reported by all dcfg structures on ports
+	 * that have access to this partition.
+	 */
+	version[0] = version[1] = version[2] = version[3] = 0;
+	for (i = 0; i < EFX_ARRAY_SIZE(siena_parttbl); i++) {
+		siena_mc_fw_version_t *verp;
+		unsigned int nitems;
+		uint16_t temp[4];
+		size_t length;
+
+		entry = &siena_parttbl[i];
+		if (entry->partn != partn)
+			continue;
+
+		dcfg_partn = (entry->port == 1)
+			? MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT0
+			: MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT1;
+		/*
+		 * Ingore missing partitions on port 2, assuming they're due
+		 * to to running on a single port part.
+		 */
+		if ((1 << dcfg_partn) &  ~enp->en_u.siena.enu_partn_mask) {
+			if (entry->port == 2)
+				continue;
+		}
+
+		if ((rc = siena_nvram_get_dynamic_cfg(enp, dcfg_partn,
+		    B_FALSE, &dcfg, &length)) != 0)
+			goto fail3;
+
+		nitems = EFX_DWORD_FIELD(dcfg->num_fw_version_items,
+			    EFX_DWORD_0);
+		if (nitems < entry->partn)
+			goto done;
+
+		verp = &dcfg->fw_version[partn];
+		temp[0] = EFX_WORD_FIELD(verp->version_w, EFX_WORD_0);
+		temp[1] = EFX_WORD_FIELD(verp->version_x, EFX_WORD_0);
+		temp[2] = EFX_WORD_FIELD(verp->version_y, EFX_WORD_0);
+		temp[3] = EFX_WORD_FIELD(verp->version_z, EFX_WORD_0);
+		if (memcmp(version, temp, sizeof (temp)) < 0)
+			memcpy(version, temp, sizeof (temp));
+
+done:
+		EFSYS_KMEM_FREE(enp->en_esip, length, dcfg);
+	}
+
+	return (0);
+
+fail3:
+	EFSYS_PROBE(fail3);
+fail2:
+	EFSYS_PROBE(fail2);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+siena_nvram_partn_rw_start(
+	__in			efx_nic_t *enp,
+	__in			uint32_t partn,
+	__out			size_t *chunk_sizep)
+{
+	efx_rc_t rc;
+
+	if ((rc = siena_nvram_partn_lock(enp, partn)) != 0)
+		goto fail1;
+
+	if (chunk_sizep != NULL)
+		*chunk_sizep = SIENA_NVRAM_CHUNK;
+
+	return (0);
+
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+siena_nvram_partn_rw_finish(
+	__in			efx_nic_t *enp,
+	__in			uint32_t partn)
+{
+	efx_rc_t rc;
+
+	if ((rc = siena_nvram_partn_unlock(enp, partn)) != 0)
+		goto fail1;
+
+	return (0);
+
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+	__checkReturn		efx_rc_t
+siena_nvram_partn_set_version(
+	__in			efx_nic_t *enp,
+	__in			uint32_t partn,
+	__in_ecount(4)		uint16_t version[4])
+{
+	efx_mcdi_iface_t *emip = &(enp->en_mcdi.em_emip);
+	siena_mc_dynamic_config_hdr_t *dcfg = NULL;
+	siena_mc_fw_version_t *fwverp;
+	uint32_t dcfg_partn;
+	size_t dcfg_size;
+	unsigned int hdr_length;
+	unsigned int vpd_length;
+	unsigned int vpd_offset;
+	unsigned int nitems;
+	unsigned int required_hdr_length;
+	unsigned int pos;
+	uint8_t cksum;
+	uint32_t subtype;
+	size_t length;
+	efx_rc_t rc;
+
+	dcfg_partn = (emip->emi_port == 1)
+		? MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT0
+		: MC_CMD_NVRAM_TYPE_DYNAMIC_CFG_PORT1;
+
+	if ((rc = siena_nvram_partn_size(enp, dcfg_partn, &dcfg_size)) != 0)
+		goto fail1;
+
+	if ((rc = siena_nvram_partn_lock(enp, dcfg_partn)) != 0)
+		goto fail2;
+
+	if ((rc = siena_nvram_get_dynamic_cfg(enp, dcfg_partn,
+	    B_TRUE, &dcfg, &length)) != 0)
+		goto fail3;
+
+	hdr_length = EFX_WORD_FIELD(dcfg->length, EFX_WORD_0);
+	nitems = EFX_DWORD_FIELD(dcfg->num_fw_version_items, EFX_DWORD_0);
+	vpd_length = EFX_DWORD_FIELD(dcfg->dynamic_vpd_length, EFX_DWORD_0);
+	vpd_offset = EFX_DWORD_FIELD(dcfg->dynamic_vpd_offset, EFX_DWORD_0);
+
+	/*
+	 * NOTE: This function will blatt any fields trailing the version
+	 * vector, or the VPD chunk.
+	 */
+	required_hdr_length = SIENA_DYNAMIC_CFG_SIZE(partn + 1);
+	if (required_hdr_length + vpd_length > length) {
+		rc = ENOSPC;
+		goto fail4;
+	}
+
+	if (vpd_offset < required_hdr_length) {
+		(void) memmove((caddr_t)dcfg + required_hdr_length,
+			(caddr_t)dcfg + vpd_offset, vpd_length);
+		vpd_offset = required_hdr_length;
+		EFX_POPULATE_DWORD_1(dcfg->dynamic_vpd_offset,
+				    EFX_DWORD_0, vpd_offset);
+	}
+
+	if (hdr_length < required_hdr_length) {
+		(void) memset((caddr_t)dcfg + hdr_length, 0,
+			required_hdr_length - hdr_length);
+		hdr_length = required_hdr_length;
+		EFX_POPULATE_WORD_1(dcfg->length,
+				    EFX_WORD_0, hdr_length);
+	}
+
+	/* Get the subtype to insert into the fw_subtype array */
+	if ((rc = siena_nvram_get_subtype(enp, partn, &subtype)) != 0)
+		goto fail5;
+
+	/* Fill out the new version */
+	fwverp = &dcfg->fw_version[partn];
+	EFX_POPULATE_DWORD_1(fwverp->fw_subtype, EFX_DWORD_0, subtype);
+	EFX_POPULATE_WORD_1(fwverp->version_w, EFX_WORD_0, version[0]);
+	EFX_POPULATE_WORD_1(fwverp->version_x, EFX_WORD_0, version[1]);
+	EFX_POPULATE_WORD_1(fwverp->version_y, EFX_WORD_0, version[2]);
+	EFX_POPULATE_WORD_1(fwverp->version_z, EFX_WORD_0, version[3]);
+
+	/* Update the version count */
+	if (nitems < partn + 1) {
+		nitems = partn + 1;
+		EFX_POPULATE_DWORD_1(dcfg->num_fw_version_items,
+				    EFX_DWORD_0, nitems);
+	}
+
+	/* Update the checksum */
+	cksum = 0;
+	for (pos = 0; pos < hdr_length; pos++)
+		cksum += ((uint8_t *)dcfg)[pos];
+	dcfg->csum.eb_u8[0] -= cksum;
+
+	/* Erase and write the new partition */
+	if ((rc = siena_nvram_partn_erase(enp, dcfg_partn, 0, dcfg_size)) != 0)
+		goto fail6;
+
+	/* Write out the new structure to nvram */
+	if ((rc = siena_nvram_partn_write(enp, dcfg_partn, 0,
+	    (caddr_t)dcfg, vpd_offset + vpd_length)) != 0)
+		goto fail7;
+
+	EFSYS_KMEM_FREE(enp->en_esip, length, dcfg);
+
+	siena_nvram_partn_unlock(enp, dcfg_partn);
+
+	return (0);
+
+fail7:
+	EFSYS_PROBE(fail7);
+fail6:
+	EFSYS_PROBE(fail6);
+fail5:
+	EFSYS_PROBE(fail5);
+fail4:
+	EFSYS_PROBE(fail4);
+
+	EFSYS_KMEM_FREE(enp->en_esip, length, dcfg);
+fail3:
+	EFSYS_PROBE(fail3);
+fail2:
+	EFSYS_PROBE(fail2);
+fail1:
+	EFSYS_PROBE1(fail1, efx_rc_t, rc);
+
+	return (rc);
+}
+
+#endif	/* EFSYS_OPT_NVRAM */
+
+#endif	/* EFSYS_OPT_SIENA */